按照没有关联关系的交易各方进行相同或者类似业务往来的价格进行定价的方法是（）。 A.

请阅读短文，并完成后面的选择题。

      Hello, friends! My name is Zoom. Today is Sunday. My father, my mother, my sister and I are at home.

We are busy now. Look, my father is writing an e-mail to my grandpa. My mother is cooking dinner. My sister

is listening to music. I am watching TV. Oh, my little kitty is eating fish. What a busy Sunday! Do you often

have a busy Sunday?

1. What day is it today?  ___________

A. It's Sunday.

B. It's Monday.

2. Zoom's father is ___________.

A. writing an e-mail

B. reading a newspaper

3. Zoom's mother is ___________.

A. cleaning the room

B. cooking dinner

4. Zoom's ___________.

A. doing his homework

B. watching TV

5. Who is eating fish?  It's ___________.

A. Zoom's sister

B. Zoom's cat

通常（）剖面的金刚石钻头多用于硬质砂岩．致密白云岩等硬地层。

A、双锥阶梯形

B、双锥形

C、B型

D、楔形

用糖皮质激素治疗重症哮喘的机制，下列哪项不正确（）

A.抑制M胆碱能受体

B.促进β受体数量

C.减少组胺形成

D.抑制炎症反应

E.降低气道反应性

热油加热盘管内的介质油流速一般情况下不低于（）。

A.2～3m/s

B.1～2m/s

C.3～4m/s

质量次的电源的+5V不稳定，会导致鼠标经常失灵。